{"instruction": "你是专门进行关系抽取的专家。请从input中抽取出符合schema定义的关系三元组，不存在的关系返回空列表。请按照JSON字符串的格式回答。", "schema": ["内窥镜检查", "同义词（检查）", "筛查", "多发群体"], "input": "前列腺癌@经直肠超声 (trans-rectal ultrasound, TRUS) 引导的穿刺活检可证实诊断和帮助分级。"}
{"内窥镜检查": [], "同义词（检查）": [{"subject": "经直肠超声", "object": "trans-rectal ultrasound"}, {"subject": "经直肠超声", "object": "TRUS"}], "筛查": [], "多发群体": []}